The ongoing fighting between Ukrainian government forces and the Russia-backed separatists in Eastern Ukraine poses a serious chemical weapons risk, according to a report by Fox News.

Late last month a stray artillery shell hit the Donetsk Filter Station’s chlorine gas depot, which holds 15,000 pounds of chlorine gas. While the containers — by sheer luck – were not damaged, the incident raised serious red flags.

According to Baskut Tuncak, U.N. special rapporteur on human rights and hazardous substances and wastes, damage to just one chlorine-filled, 2,000-pound container has the potential to kill anyone within a 600-foot distance and poses dire health risks to the tens of thousands of surrounding residents.

“If one of those uncontrolled sites containing chemicals were to detonate, tens of thousands of people could be poisoned. It is a potential disaster on the scale of Chernobyl,” Robert Amsterdam, Russian political expert and lawyer at international law firm Amsterdam & Partners, told Fox News.

Read the full article on Fox News.